Patents by Inventor Bunkichi Sugahara

Bunkichi Sugahara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Joined prism assembly and method and apparatus for manufacturing same
    Patent number: 5236541
    Abstract: A joined prism assembly having more than two prisms adhered to each other at joining surfaces is disclosed. The joined prism includes stepped portions between the end faces of the prisms adjacent to the joining surfaces for defining exposed positioning reference surfaces for when the prisms are adhered to each other.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: August 17, 1993
    Assignee: Ashai Kogaku Kogyo Kabushiki Kaisha
    Inventor: Bunkichi Sugahara
  • Joined prism assembly and method and apparatus for manufacturing same
    Patent number: 5221998
    Abstract: A joined prism assembly having more than two prisms adhered to each other at joining surfaces is disclosed. The joined prism includes stepped portions between the end faces of the prisms adjacent to the joining surfaces for defining exposed positioning reference surfaces for when the prisms are adhered to each other.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: June 22, 1993
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Bunkichi Sugahara
  • Joined prism assembly and method and apparatus for manufacturing same
    Patent number: 5122217
    Abstract: A joined prism assembly having more than two prisms adhered to each other at joining surfaces is disclosed. The joined prism includes stepped portions between the end faces of the prisms adjacent to the joining surfaces for defining exposed positioning reference surfaces for when the prisms are adhered to each other.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: June 16, 1992
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Bunkichi Sugahara